Is there light at the end of every tunnel 是否有光照在所有隧道的尽头 ...

Penang street shot 槟城街拍 ...

Georgetown Penang 槟城 ...

It is true that
there is light in the end of every tunnel;
don't be too sure about it, 
as
there may not be any light at all

if you blindly believe that you are in the tunnel ...